WO2020164203A1 - 多联机空调系统的冷媒控制方法 - Google Patents
多联机空调系统的冷媒控制方法 Download PDFInfo
- Publication number
- WO2020164203A1 WO2020164203A1 PCT/CN2019/087814 CN2019087814W WO2020164203A1 WO 2020164203 A1 WO2020164203 A1 WO 2020164203A1 CN 2019087814 W CN2019087814 W CN 2019087814W WO 2020164203 A1 WO2020164203 A1 WO 2020164203A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- degree
- deviation
- expansion valve
- toil
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
Definitions
- the invention belongs to the technical field of air conditioning, and specifically relates to a refrigerant control method of a multi-connected air conditioning system.
- the refrigerant refers to the working substance that circulates continuously and realizes cooling/heating through its own state change, that is, it absorbs/releases heat in the indoor heat exchanger to vaporize/liquefy, and the heat is transferred to the outdoor heat exchanger Transfer to the surrounding environment/absorb heat from the surrounding environment and liquefy/vaporize.
- the outdoor unit is usually connected to multiple indoor units, and according to the length of the pipeline installed on site, refrigerant is often added. The additional amount of refrigerant is often simply calculated based on the pipe diameter and pipe length.
- the refrigerant circulation volume is generally adjusted through an expansion valve.
- the amount of refrigerant circulation required by the air-conditioning system is often related to the temperature environment of the air-conditioning system and the number of units that are turned on. Too much or too little refrigerant circulation will affect the cooling/heating effect of the air-conditioning system. Once it exceeds the normal compressor The operating range will also cause damage to the compressor.
- the present invention proposes a new refrigerant control method for a multi-connected air conditioning system to control the operating parameters of the compressor to ensure stable and reliable operation of the air conditioning system.
- the present invention proposes a refrigerant control method for an air-conditioning system.
- the multi-line air-conditioning system includes a compressor , An outdoor unit and a plurality of indoor units connected to the outdoor unit, the outdoor unit includes an outdoor unit expansion valve, and each indoor unit includes an internal unit expansion valve;
- the refrigerant control method includes the following steps: S110, During the operation of the compressor, obtain the current operating value of the compressor target parameter; S120: Calculate the compressor according to the current operating value of the compressor target parameter and the standard operating range of the compressor target parameter The degree of deviation of the target parameter; S130. Selectively adjust the opening degree of the external machine expansion valve or the internal machine expansion valve based on the degree of deviation; wherein the standard operating range of the target parameter is that the compressor is normal The operating range of the target parameter specified by the operating state.
- step S130 specifically includes: calculating the position according to the deviation degree D pd , the deviation degree D ps , the deviation degree D c , the deviation degree D Td and the deviation degree D Toil
- the opening degree of the external machine expansion valve or the internal machine expansion valve is always selectively adjusted.
- the preset upper threshold L up of the degree of deviation is 0.1
- the preset lower threshold L down of the degree of deviation is -0.08
- /Or calculating the total deviation degree D total of the compressor every preset time.
- the multi-line air-conditioning system when the multi-line air-conditioning system is operating in the cooling mode, only the opening degree of the expansion valve of the internal unit is adjusted; In the mode, only the opening of the external machine expansion valve is adjusted; and/or, the opening increase of the internal machine expansion valve or the external machine expansion valve does not exceed the internal machine expansion valve or the external machine expansion valve.
- the current opening of the expansion valve is 5%; the reduction in the opening of the internal expansion valve or the external expansion valve does not exceed 5% of the current opening of the internal expansion valve or the external expansion valve.
- the present invention calculates the deviation degree of the compressor target parameter based on the current operating value of the compressor target parameter and the standard operating range of the compressor target parameter; then selectively adjusts the degree of deviation of the external machine expansion valve or the internal machine expansion valve based on the deviation degree of the target parameter Opening. Specifically, by calculating the total deviation of multiple target parameters to adjust the opening of the external expansion valve or the internal expansion valve to dynamically adjust the refrigerant circulation of the air conditioner system, so that the compressor is within the operating range of the specified target parameters Internal operation to ensure the stable and reliable operation of the multi-line air conditioning system.
- Fig. 1 is the main flow chart of the refrigerant control method of the multi-connected air conditioning system of the present invention.
- a multi-line air conditioning system generally includes a compressor, an outdoor unit, and multiple indoor units connected to the outdoor unit.
- the outdoor unit includes an outdoor unit expansion valve, and each indoor unit includes an internal unit expansion.
- the amount of refrigerant circulation can generally be adjusted through an internal expansion valve or an external expansion valve.
- the invention mainly adjusts the opening degree of the internal expansion valve or the external expansion valve in real time according to the operating parameters of the compressor, so as to dynamically adjust the refrigerant circulation of the air conditioning system and control the compressor to operate within the normal range, thereby ensuring the multi-line air conditioning system The stable and reliable operation.
- Fig. 1 is a main flowchart of the refrigerant control method of the multi-connected air conditioning system of the present invention.
- the refrigerant control method of the multi-connected air conditioning system of the present invention includes the following steps: S110, acquiring the current operating value of the compressor target parameter during the compressor operation; S120, according to the current compressor target parameter The operating value and the standard operating range of the compressor target parameter calculate the degree of deviation of the compressor target parameter; S130, the opening degree of the external machine expansion valve or the internal machine expansion valve is selectively adjusted based on the degree of deviation.
- the standard operating range of the target parameter is the operating range of the target parameter specified in the normal operating state of the compressor.
- the compressor's operating range is controlled by high pressure, low pressure, compression ratio, exhaust superheat and oil temperature superheat. To ensure the normal operation of the air conditioning system, these parameters must be controlled within the specified range. In actual operation, these parameters influence each other, and the amount of refrigerant circulation plays a decisive role.
- the target parameters in step S110 can be high pressure (current operating value is recorded as Pd), low pressure (current operating value is recorded as Ps), compression ratio (current operating value is recorded as compRate), exhaust gas Heat (the current operating value is recorded as Td) and oil temperature superheat (the current operating value is recorded as Toil).
- Pd current operating value is recorded as Pd
- Ps low pressure
- compression ratio current operating value is recorded as compRate
- exhaust gas Heat the current operating value is recorded as Td
- oil temperature superheat the current operating value is recorded as Toil
- step S120 the degree of deviation of each of the above target parameters is calculated.
- the control directions of high pressure, low pressure and compression ratio are the same. If the values of high pressure, low pressure and compression ratio are too large, the expansion valve of the internal machine or the external machine will be reduced. If the opening of the expansion valve is too small, the opening of the internal expansion valve or the external expansion valve will be increased.
- the current operating value of the low pressure pressure of the compressor is Ps.
- the standard operating range of the low pressure pressure is 1-10Kg
- the upper limit of the maximum value Ps in the standard operating range is 10kg
- the minimum Ps lower limit in the standard operating range is 3kg.
- the current operating value of the high pressure pressure is Pd.
- the upper limit of the maximum value of Pd in the standard operating range is 38kg, and the lower limit of the minimum value of Pd in the standard operating range is 17kg.
- the current compression ratio of the compressor is compRate.
- the upper limit of the maximum value C of the standard operating range of the compression ratio is 8, and the lower limit of the minimum value C is 2.
- the control directions of the exhaust gas superheat Td and the oil temperature superheat Td are the same.
- the exhaust gas superheat Td and the oil temperature superheat Td are too large, the internal expansion valve Or the opening degree of the external machine expansion valve increases, and the exhaust gas superheat degree Td and the oil temperature superheat degree Td are too small, the opening degree of the internal machine expansion valve or the outer machine expansion valve decreases.
- the current operating value of the compressor's exhaust superheat is Td.
- the standard operating range of exhaust superheat is 25-60°C, and its standard operating range
- the upper limit of the maximum value of Td is 60°C, and the lower limit of the minimum value of Td in the standard operating range is 25°C.
- the oil temperature of the compressor superheat Toil is currently running, as shown in Table 1, the standard operating range of the oil is 15-50 deg.] C superheat, the standard operating range of the maximum limit is 50 °C Toil , The minimum Toil lower limit in the standard operating range is 15°C.
- step S130 the step of selectively adjusting the opening degree of the external machine expansion valve or the internal machine expansion valve based on the degree of deviation specifically includes: according to the degree of deviation of the aforementioned target parameters (ie, degree of deviation D pd , degree of deviation D ps , deviation The degree D c , the degree of deviation D Td and the degree of deviation D Toil ) calculate the total degree of deviation D total of the compressor.
- the aforementioned target parameters ie, degree of deviation D pd , degree of deviation D ps , deviation The degree D c , the degree of deviation D Td and the degree of deviation D Toil
- D total W pd *D pd , +W ps *D ps +W c *D c +W Td *D Td +W Toil *D Toil ,
- W pd , W ps , W c , W Td and W Toil They are the weight values set in advance for the compressor's high pressure, low pressure, compression ratio, exhaust superheat and oil temperature superheat.
- the weight of each target parameter can be set according to the specifications or recommendations of the compressor manufacturer (Table 2 below gives specific examples of a set of weights).
- Those skilled in the art can calculate the total deviation degree D total of the compressor every preset time, for example, every 10 seconds or other suitable time, and those skilled in the art can flexibly set the preset time.
- the upper threshold value L up and the lower threshold value L down of the degree of deviation preset in the foregoing can be set by those skilled in the art through experiments.
- the upper threshold L up may be set to 0.1
- the lower threshold L down may be set to -0.08.
- limit values can be set for the adjustment of the opening of the internal expansion valve and the external expansion valve.
- the opening of the internal expansion valve or the external expansion valve can be increased by the same amount. Exceeding 5% of the current opening of the internal expansion valve or the external expansion valve; the reduction of the opening of the internal expansion valve or the external expansion valve does not exceed 5% of the current opening of the internal expansion valve or the external expansion valve .
- Table 2 shows the weight of each target parameter and the degree of deviation of each target parameter of an embodiment:
- the opening degree of the external machine expansion valve is 150
- the unit of the opening degree of the external machine expansion valve can be one circle, two circle or other measurement units.
- the present invention adjusts the opening degree of the internal expansion valve or the external expansion valve in real time according to the operating parameters of the compressor, so as to dynamically adjust the refrigerant circulation of the air conditioning system and control the compressor to operate within the normal range, thereby ensuring multiple Stable and reliable operation of the online air conditioning system.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本发明属于空调技术领域,具体涉及一种多联机空调系统的冷媒控制方法。为了控制压缩机的运行参数以保证空调系统稳定、可靠地运行,本发明提出的多联机空调系统的冷媒控制方法包括:在压缩机运行的过程中,获取压缩机目标参数的当前运行值;根据压缩机目标参数的当前运行值和压缩机目标参数的标准运行范围计算压缩机目标参数的偏差程度;基于偏差程度选择性地调整外机膨胀阀或内机膨胀阀的开度;其中,目标参数的标准运行范围为压缩机正常运行状态所规定的目标参数的运行范围。本发明根据压缩机的运行参数,实时调整内机膨胀阀或外机膨胀阀的开度,以便动态调整空调系统的冷媒循环量,控制压缩机在正常范围内运行,从而保证系统稳定可靠地运转。
Description
本发明属于空调技术领域,具体涉及一种多联机空调系统的冷媒控制方法。
在空调系统中,冷媒是指不断循环并通过自身的状态变化实现制冷/制热的工作物质,即在室内换热器内吸收/释放热量而气化/液化,在室外换热器中将热量传递给周围环境/从周围环境吸收热量而液化/气化。在多联机空调系统中,室外机通常连接多个室内机,并根据现场安装的管路长度,往往会追加冷媒,冷媒的追加量往往只是简单的根据管径、管长来计算。
目前,冷媒循环量一般通过膨胀阀来调节,如制冷时,调整室内的膨胀阀开度;制热时,调整室外机的膨胀阀开度。而空调系统需要的冷媒循环量通往往跟空调系统所在的温度环境、开机台数等有关,冷媒循环量过多或过少,都会影响空调器系统的制冷/制热效果,一旦超出压缩机的正常运转范围,还会造成压缩机的损坏。
因此,本发明提出了一种新的多联机空调系统的冷媒控制方法来控制压缩机的运行参数以保证空调系统稳定、可靠地运行。
发明内容
为了解决现有技术中的上述问题,即为了控制压缩机的运行参数以保证空调系统稳定、可靠地运行,本发明提出了一种空调系统的冷媒控制方法,所述多联机空调系统包括压缩机、室外机和与所述室外机连接的多个室内机,所述室外机包括外机膨胀阀,每个所述室内机包括内机膨胀阀;所述冷媒控制方法包括下列步骤:S110、在所述压缩机运行的过程中,获取所述压缩机目标参数的当前运行值;S120、根据所述压缩机目标参数的当前运行值和所述压缩机目标参数的标准运行范围计算所述压缩机目标参数的偏差程度;S130、基于所 述偏差程度选择性地调整所述外机膨胀阀或所述内机膨胀阀的开度;其中,所述目标参数的标准运行范围为所述压缩机正常运行状态所规定的目标参数的运行范围。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在步骤S110中,所述目标参数包括所述压缩机的高压压力,所述高压压力的当前运行值为Pd;在步骤S120中,当Pd
下限≤Pd≤Pd
上限时,所述高压压力Pd的偏差程度D
pd为0;当Pd>Pd
上限时,所述高压压力Pd的偏差程度D
pd按照如下公式计算:D
pd=Pd
上限/Pd-1;当Pd<Pd
下限时,所述高压压力Pd的偏差程度D
pd按照如下公式计算:D
pd=Pd
下限/Pd-1;其中,Pd
上限为所述高压压力的标准运行范围中的最大值,Pd
下限为所述高压压力的标准运行范围中的最小值。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在步骤S110中,所述目标参数还包括所述压缩机的低压压力,所述低压压力的当前运行值为Ps;在步骤S120中,当Ps
下限≤Ps≤Ps
上限时,所述低压压力Ps的偏差程度D
ps为0;当Ps>Ps
上限时,所述低压压力Ps的偏差程度D
ps按照如下公式计算:D
ps=Ps
上限/Ps-1;当Ps<Ps
下限时,所述低压压力Ps的偏差程度D
ps按照如下公式计算:D
ps=Ps
下限/Ps-1;其中,Ps
上限为所述低压压力的标准运行范围中的最大值,Ps
下限为所述低压压力的标准运行范围中的最小值。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在步骤S110中,所述目标参数还包括所述压缩机的压缩比,所述压缩比compRate=(Pd+1)/(Ps+1);在步骤S120中,当C
下限≤compRate≤C
上限时,所述压缩比的偏差程度D
c为0;当compRate>C
上限时,所述压缩比的偏差程度D
c按照如下公式计算:D
c=C
上限/compRate-1;当compRate<C
下限时,所述压缩比的偏差程度D
c按照如下公式计算:D
c=C
下限/compRate-1;其中,C
上限为所述压缩比的标准运行范围中的最大值,C
下限为所述压缩比的标准运行范围中的最小值。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在步骤S110中,所述目标参数还包括所述压缩机的排气过热度,所述排气过热度的当前运行值为Td;在步骤S120中,当Td
下限≤Td≤Td
上限时,所述排气过热度Td的偏差程度D
Td为0;当Td>Td
上限时,所述排 气过热度Td的偏差程度D
Td按照如下公式计算:D
Td=Td/Td
上限-1;当Td<Td
下限时,所述排气过热度Td的偏差程度D
Td按照如下公式计算:D
Td=Td/Td
下限-1;其中,Td
上限为所述排气过热度的标准运行范围中的最大值,Td
下限为所述排气过热度的标准运行范围中的最大值。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在步骤S110中,所述目标参数还包括所述压缩机的油温过热度,所述油温过热度的当前运行值为Toil;在步骤S120中,当Toil
下限≤Toil≤Toil
上限时,所述油温过热度Toil的偏差程度D
Toil为0;当Toil>Toil
上限时,所述油温过热度Toil的偏差程度D
Toil按照如下公式计算:D
Toil=Toil/Toil
上限-1;当Toil<Toil
下限时,所述油温过热度Toil的偏差程度D
Toil按照如下公式计算:D
Toil=Toil/Toil
下限-1;其中,Toil
上限为所述油温过热度Toil的标准运行范围中的最大值,Toil
下限为所述油温过热度Toil的标准运行范围中的最大值。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,步骤S130具体包括:根据所述偏差程度D
pd、偏差程度D
ps、偏差程度D
c、偏差程度D
Td和偏差程度D
Toil计算所述压缩机的总偏差程度D
总:D
总=W
pd*D
pd、+W
ps*D
ps+W
c*D
c+W
Td*D
Td+W
Toil*D
Toil;其中,W
pd、W
ps、W
c、W
Td和W
Toil分别是预先为所述压缩机的高压压力、低压压力、压缩比、排气过热度和油温过热度设定的权重值;根据所述总偏差程度D
总选择性地调整所述外机膨胀阀或内机膨胀阀的开度。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,“根据所述总偏差程度D
总选择性地调整所述外机膨胀阀或内机膨胀阀的开度”的步骤具体包括:当D
总>L
up时,将所述内机膨胀阀的开度或外机膨胀阀的开度增大P
ls=P
当前*(D
总-L
up);当D
总<L
down时,将所述内机膨胀阀的开度或外机膨胀阀的开度减小P
ls=P
当前*(L
down-D
总);当L
down≤D
总≤L
up时,不调整所述内机膨胀阀和所述外机膨胀阀的开度;其中,P
当前为当前内机膨胀阀或外机膨胀阀的开度,L
up为预先设定的偏差程度的阈值上限,L
down为预先设定的偏差程度的阈值下限。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,所述预先设定的偏差程度的阈值上限L
up为0.1,所述预先设定的偏差程度的阈值下限L
down为-0.08;并且/或者,每隔预设时间计算一次所 述压缩机的总偏差程度D
总。
在上述多联机空调系统的冷媒控制方法的优选实施方式中,在所述多联机空调系统运行制冷模式时,只调整所述内机膨胀阀的开度;在所述多联机空调系统运行制热模式时,只调整所述外机膨胀阀的开度;并且/或者,所述内机膨胀阀或所述外机膨胀阀的开度增大量不超过所述内机膨胀阀或所述外机膨胀阀当前开度的5%;所述内机膨胀阀或所述外机膨胀阀的开度减小量不超过所述内机膨胀阀或所述外机膨胀阀当前开度的5%。
本发明根据压缩机目标参数的当前运行值和压缩机目标参数的标准运行范围计算压缩机目标参数的偏差程度;然后基于目标参数的偏差程度选择性地调整外机膨胀阀或内机膨胀阀的开度。具体地,通过计算多个目标参数的总偏差程度来调整外机膨胀阀或内机膨胀阀的开度来动态调整空调器系统的冷媒循环量,以使压缩机在规定的目标参数的运行范围内运行,从而保证多联机空调系统的稳定可地靠运转。
图1是本发明多联机空调系统的冷媒控制方法的主要流程图。
为使本发明的实施例、技术方案和优点更加明显,下面将结合附图对本发明的技术方案进行清楚、完整的描述,显然,所述的实施例是本发明的一部分实施例,而不是全部实施例。本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。
多联机空调系统一般包括压缩机、室外机和与室外机连接的多个室内机,室外机包括外机膨胀阀,每个室内机包括内机膨胀。本领域技术人员可以理解的是,冷媒循环量一般可通过内机膨胀阀或外机膨胀阀进行调节。制冷运行时,调整内机膨胀阀的开度;制热运行时,调整外机膨胀阀的开度。本发明主要根据压缩机的运行参数, 实时调整内机膨胀阀或外机膨胀阀的开度,以便动态调整空调系统的冷媒循环量,控制压缩机在正常范围内运行,从而保证多联机空调系统的稳定可靠地运转。
具体地,参照图1,图1是本发明多联机空调系统的冷媒控制方法的主要流程图。如图1所示,本发明的多联机空调系统的冷媒控制方法包括下列步骤:S110、在压缩机运行的过程中,获取压缩机目标参数的当前运行值;S120、根据压缩机目标参数的当前运行值和压缩机目标参数的标准运行范围计算压缩机目标参数的偏差程度;S130、基于偏差程度选择性地调整外机膨胀阀或内机膨胀阀的开度。其中,目标参数的标准运行范围为压缩机正常运行状态所规定的目标参数的运行范围。下面结合一种具体地实施方式对本发明的冷媒控制方法进行详细说明。
根据压缩机的规格书,压缩机的运转范围由高压压力、低压压力、压缩比、排气过热度和油温过热度控制。要保证空调系统的正常运转,必须要控制这些参数在规定范围内。在实际运转中,这些参数是互相影响的,而冷媒循环量起到决定作用。
在本实施例中,步骤S110中的目标参数可以是高压压力(当前运行值记为Pd)、低压压力(当前运行值记为Ps)、压缩比(当前运行值记作compRate)、排气过热度(当前运行值记为Td)和油温过热度(当前运行值记为Toil)。为了清楚起见,上述目标参数的标准运行范围以及参数说明请参见下表1:
表1
在步骤S120中,计算上述每个目标参数的偏差程度。本领域技术人员能够理解的是,在上述目标参数中,高压压力、低压压力和压缩比的控制方向一致,高压压力、低压压力和压缩比的值过大则减小内机膨胀阀或外机膨胀阀的开度,过小则增大内机膨胀阀或外机膨胀阀的开度。
以计算低压压力的偏差程度为例,压缩机的低压压力的当前运行值为Ps,如表1所示,低压压力的标准运行范围为1-10Kg,其标准运行范围中的最大值Ps
上限为10kg,其标准运行范围中的最小值Ps
下限为3kg。当Ps
下限≤Ps≤Ps
上限时,则低压压力的偏差程度D
ps为0;当Ps>Ps
上限时,低压压力的偏差程度D
ps按照如下公式计算:D
ps=Ps
上限/Ps-1;当Ps<Ps
下限时,低压压力Ps的偏差程度D
ps按照如下公式计算:D
ps=Ps
下
限/Ps-1。例如,当压缩机的低压压力的当前运行值Ps=11kg时,其偏差程度D
ps=10/11-1=-0.09;当压缩机的低压压力的当前运行值Ps=2.5kg时,其偏差程度D
ps=3/2.5-1=0.2。
同理,高压压力的当前运行值为Pd,如表1所示,其标准运行范围中的最大值Pd
上限为38kg,其标准运行范围中的最小值Pd
下限为17kg。当Pd
下限≤Pd≤Pd
上限时,高压压力Pd的偏差程度D
pd为0;当Pd>Pd
上限时,高压压力Pd的偏差程度D
pd按照如下公式计算:D
pd=Pd
上限/Pd-1;当Pd<Pd
下限时,高压压力Pd的偏差程度D
pd按照如下公式计算:D
pd=Pd
下限/Pd-1。
同理,压缩机的当前压缩比为compRate,如表1所示,压缩比的标准运行范围中最大值C
上限为8,最小值C
下限为2。当C
下限≤compRate≤C
上限时,压缩比的偏差程度D
c为0;当compRate>C
上限时,压缩比的偏差程度D
c按照如下公式计算:D
c=C
上限/compRate-1;当compRate<C
下限时,压缩比的偏差程度D
c按照如下公式计算:D
c=C
下限/compRate-1。
本领域技术人员能够理解的是,在上述目标参数中,排气过热度Td和油温过热度Td的控制方向一致,排气过热度Td和油温过热度Td过大时,内机膨胀阀或外机膨胀阀的开度增大,排气过热度Td和油温过热度Td过小时,内机膨胀阀或外机膨胀阀的开度减小。
以计算排气过热度的偏差程度为例,压缩机的排气过热度的当前运行值为Td,如表1所示,排气过热度的标准运行范围为25-60℃,其标准运行范围中的最大值Td上限为60℃,其标准运行范围中的最小值Td
下限为25℃。当Td
下限≤Td≤Td
上限时,排气过热度的偏差程度D
Td为0;当Td>Td
上限时,排气过热度的偏差程度D
Td按照如下公式计算:D
Td=Td/Td
上限-1;当Td<Td
下限时,排气过热度Td的偏差程度D
Td按照如下公式计算:D
Td=Td/Td
下限-1。例如,当Td=63℃时,D
Td=63/60-1=0.05;当Td=17℃时,D
Td=17/25-1=-0.32。
同理,压缩机的油温过热度的当前运行值为Toil,如表1所示,油温过热度的标准运行范围为15-50℃,其标准运行范围中的最大值Toil
上限为50℃,其标准运行范围中的最小值Toil
下限为15℃。当Toil
下限≤Toil≤Toil
上限时,油温过热度的偏差程度D
Toil为0;当Toil>Toil
上限时,油温过热度Toil的偏差程度按照如下公式计算:D
Toil=Toil/Toil
上限-1;当Toil<Toil
下限时,油温过热度的偏差程度D
Toil按照如下公式计算:D
Toil=Toil/Toil
下限-1。
在步骤S130中,基于偏差程度选择性地调整外机膨胀阀或内机膨胀阀的开度的步骤具体包括:根据上述各目标参数的偏差程度(即偏差程度D
pd、偏差程度D
ps、偏差程度D
c、偏差程度D
Td和偏差程度D
Toil)计算压缩机的总偏差程度D
总。D
总=W
pd*D
pd、+W
ps*D
ps+W
c*D
c+W
Td*D
Td+W
Toil*D
Toil,其中,W
pd、W
ps、W
c、W
Td和W
Toil分别是预先为压缩机的高压压力、低压压力、压缩比、排气过热度和油温过热度设定的权重值。每个目标参数的权重可以根据压缩机厂家的规格书或建议书设定(后文中的表2给出了一组权重的具体实施例)。本领域技术人员可以每隔预设时间计算一次压缩机的总偏差程度D
总,例如每隔10秒钟或者其他合适的时间,本领域技术人员可以灵活地设置预设时间。
然后根据压缩机的总偏差程度选择性地调整外机膨胀阀或内机膨胀阀的开度。具体地,当D
总>L
up时,将内机膨胀阀的开度或外机膨胀阀的开度增大P
ls=P
当前*(D
总-L
up),以提高冷媒循环量;当D
总<L
down时,将内机膨胀阀的开度或外机膨胀阀的开度减小P
ls=P
当前*(L
down-D
总),以减少冷媒循环量;当L
down≤D
总≤L
up时,不调整内 机膨胀阀和外机膨胀阀的开度。其中,P
当前为当前内机膨胀阀或外机膨胀阀的开度,L
up为预先设定的偏差程度的阈值上限,L
down为预先设定的偏差程度的阈值下限。需要说明的是,上述中预先设定的偏差程度的阈值上限L
up和阈值下限L
down可以由本领域技术人员通过试验设定。作为示例,阈值上限L
up可以设置为0.1,阈值下限L
down可以设置为-0.08。
为了保证空调系统的稳定性,不出现频繁波动,可以对内机膨胀阀和外机膨胀阀开度的调整设置限定值,例如,使内机膨胀阀或外机膨胀阀的开度增大量不超过内机膨胀阀或外机膨胀阀当前开度的5%;使内机膨胀阀或外机膨胀阀的开度减小量不超过内机膨胀阀或外机膨胀阀当前开度的5%。
作为示例,参照表2,表2给出了一种实施例的各目标参数的权重和个目标参数的偏差程度:
| 目标参数 | 权重 | 偏差程度 |
| 高压压力 | 0.2 | -0.08 |
| 低压压力 | 0.2 | 0.27 |
| 排气过热度 | 0.3 | 0.25 |
| 油温过热度 | 0.15 | 0.08 |
| 压缩比 | 0.15 | -0.04 |
表2
多联机空调系统运行制冷模式时,只调整内机膨胀阀的开度。按照上述表2的数据,压缩机的总偏差程度D
总=0.2*(-0.08)+0.2*0.27+0.3*0.25+0.15*0.08+0.15*(-0.04)=0.12。由于0.12>0.1(设定的阈值上限L
up),因此需要增大内机膨胀阀开度。假如多联机空调系统中连接了五台室内机,每台室内机当前内机膨胀阀的开度分别为P
当前1=115,P
当前2=120,P
当前3=132,P
当前4=108,P
当前5=145;每台室内机的内机膨胀阀的开度分别增大P
ls1=P
当前1*(D
总-L
up)=115*(0.12-0.1)≈2,P
ls2=P
当前2*(D
总-L
up)=120*(0.12-0.1)≈2,P
ls3=P
当前3*(D
总-L
up)=132*(0.12-0.1)≈3,P
ls4=P
当前4*(D
总-L
up)=108*(0.12-0.1)≈2,P
ls5=P
当前5*(D
总-L
up)=145*(0.12-0.1)≈3。需要说明的是,内机膨胀阀开度的增大量按照四舍五入取整数,内机膨胀阀开度的单位可以是一圈、两圈或者其他计量单位。
多联机空调系统运行制热模式时,只调整外机膨胀阀的开度。例如,当压缩机的总偏差程度D
总=-0.16时,设定的阈值下限L
down为-0.08,由于-0.16<-0.08,因此需要减小外机膨胀阀的开度。假如外机膨胀阀的开度为150,则外机膨胀阀开度减少P
ls=P
当前*(L
down-D
总)=150*(-0.08+0.16)=12。由于限定了外机膨胀阀的开度减小量不超过当前开度的5%,即不超过150*5%=7.5,四舍五入取整数为8。在该情形下,只需要将外机膨胀阀的开度减少8。外机膨胀阀开度的单位可以是一圈、两圈或者其他计量单位。
如上所述,本发明根据压缩机的运行参数,实时调整内机膨胀阀或外机膨胀阀的开度,以便动态调整空调系统的冷媒循环量,控制压缩机在正常范围内运行,从而保证多联机空调系统的稳定可靠地运转。
至此,已经结合附图所示的优选实施方式描述了本发明的技术方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。
Claims (10)
- 一种多联机空调系统的冷媒控制方法,所述多联机空调系统包括压缩机、室外机和与所述室外机连接的多个室内机,所述室外机包括外机膨胀阀,每个所述室内机包括内机膨胀阀;其特征在于,所述冷媒控制方法包括下列步骤:S110、在所述压缩机运行的过程中,获取所述压缩机目标参数的当前运行值;S120、根据所述压缩机目标参数的当前运行值和所述压缩机目标参数的标准运行范围计算所述压缩机目标参数的偏差程度;S130、基于所述偏差程度选择性地调整所述外机膨胀阀或所述内机膨胀阀的开度;其中,所述目标参数的标准运行范围为所述压缩机正常运行状态所规定的目标参数的运行范围。
- 根据权利要求1所述多联机空调系统的冷媒控制方法,其特征在于,在步骤S110中,所述目标参数包括所述压缩机的高压压力,所述高压压力的当前运行值为Pd;在步骤S120中,当Pd 下限≤Pd≤Pd 上限时,所述高压压力Pd的偏差程度D pd为0;当Pd>Pd 上限时,所述高压压力Pd的偏差程度D pd按照如下公式计算:D pd=Pd 上限/Pd-1;当Pd<Pd 下限时,所述高压压力Pd的偏差程度D pd按照如下公式计算:D pd=Pd 下限/Pd-1;其中,Pd 上限为所述高压压力的标准运行范围中的最大值,Pd 下限为所述高压压力的标准运行范围中的最小值。
- 根据权利要求2所述多联机空调系统的冷媒控制方法,其特征在于,在步骤S110中,所述目标参数还包括所述压缩机的低压压力,所述低压压力的当前运行值为Ps;在步骤S120中,当Ps 下限≤Ps≤Ps 上限时,所述低压压力Ps的偏差程度D ps为0;当Ps>Ps 上限时,所述低压压力Ps的偏差程度D ps按照如下公式计算:D ps=Ps 上限/Ps-1;当Ps<Ps 下限时,所述低压压力Ps的偏差程度D ps按照如下公式计算:D ps=Ps 下限/Ps-1;其中,Ps 上限为所述低压压力的标准运行范围中的最大值,Ps 下限为所述低压压力的标准运行范围中的最小值。
- 根据权利要求3所述多联机空调系统的冷媒控制方法,其特征在于,在步骤S110中,所述目标参数还包括所述压缩机的压缩比,所述压缩比compRate=(Pd+1)/(Ps+1);在步骤S120中,当C 下限≤compRate≤C 上限时,所述压缩比的偏差程度D c为0;当compRate>C 上限时,所述压缩比的偏差程度D c按照如下公式计算:D c=C 上限/compRate-1;当compRate<C 下限时,所述压缩比的偏差程度D c按照如下公式计算:D c=C 下限/compRate-1;其中,C 上限为所述压缩比的标准运行范围中的最大值,C 下限为所述压缩比的标准运行范围中的最小值。
- 根据权利要求4所述多联机空调系统的冷媒控制方法,其特征在于,在步骤S110中,所述目标参数还包括所述压缩机的排气过热度,所述排气过热度的当前运行值为Td;在步骤S120中,当Td 下限≤Td≤Td 上限时,所述排气过热度Td的偏差程度D Td为0;当Td>Td 上限时,所述排气过热度Td的偏差程度D Td按照如下公式计算:D Td=Td/Td 上限-1;当Td<Td 下限时,所述排气过热度Td的偏差程度D Td按照如下公式计算:D Td=Td/Td 下限-1;其中,Td 上限为所述排气过热度的标准运行范围中的最大值,Td 下限为所述排气过热度的标准运行范围中的最大值。
- 根据权利要求5所述多联机空调系统的冷媒控制方法,其特征在于,在步骤S110中,所述目标参数还包括所述压缩机的油温过热度,所述油温过热度的当前运行值为Toil;在步骤S120中,当Toil 下限≤Toil≤Toil 上限时,所述油温过热度Toil的偏差程度D Toil为0;当Toil>Toil 上限时,所述油温过热度Toil的偏差程度D Toil按照如下公式计算:D Toil=Toil/Toil 上限-1;当Toil<Toil 下限时,所述油温过热度Toil的偏差程度D Toil按照如下公式计算:D Toil=Toil/Toil 下限-1;其中,Toil 上限为所述油温过热度Toil的标准运行范围中的最大值,Toil 下限为所述油温过热度Toil的标准运行范围中的最大值。
- 根据权利要求6所述多联机空调系统的冷媒控制方法,其特征在于,步骤S130具体包括:根据所述偏差程度D pd、偏差程度D ps、偏差程度D c、偏差程度D Td和偏差程度D Toil计算所述压缩机的总偏差程度D 总:D 总=W pd*D pd、+W ps*D ps+W c*D c+W Td*D Td+W Toil*D Toil;其中,W pd、W ps、W c、W Td和W Toil分别是预先为所述压缩机的高压压力、低压压力、压缩比、排气过热度和油温过热度设定的权重值;根据所述总偏差程度D 总选择性地调整所述外机膨胀阀或内机膨胀阀的开度。
- 根据权利要求7所述多联机空调系统的冷媒控制方法,其特征在于,“根据所述总偏差程度D 总选择性地调整所述外机膨胀阀或内机膨胀阀的开度”的步骤具体包括:当D 总>L up时,将所述内机膨胀阀的开度或外机膨胀阀的开度增大P ls=P 当前*(D 总-L up);当D 总<L down时,将所述内机膨胀阀的开度或外机膨胀阀的开度减 小P ls=P 当前*(L down-D 总);当L down≤D 总≤L up时,不调整所述内机膨胀阀和所述外机膨胀阀的开度;其中,P 当前为当前内机膨胀阀或外机膨胀阀的开度,L up为预先设定的偏差程度的阈值上限,L down为预先设定的偏差程度的阈值下限。
- 根据权利要求8所述多联机空调系统的冷媒控制方法,其特征在于,所述预先设定的偏差程度的阈值上限L up为0.1,所述预先设定的偏差程度的阈值下限L down为-0.08;并且/或者,每隔预设时间计算一次所述压缩机的总偏差程度D 总。
- 根据权利要求1至9中任一项所述多联机空调系统的冷媒控制方法,其特征在于,在所述多联机空调系统运行制冷模式时,只调整所述内机膨胀阀的开度;在所述多联机空调系统运行制热模式时,只调整所述外机膨胀阀的开度;并且/或者,所述内机膨胀阀或所述外机膨胀阀的开度增大量不超过所述内机膨胀阀或所述外机膨胀阀当前开度的5%;所述内机膨胀阀或所述外机膨胀阀的开度减小量不超过所述内机膨胀阀或所述外机膨胀阀当前开度的5%。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/961,398 US11300313B2 (en) | 2019-02-14 | 2019-05-21 | Cooling medium control method for multi-connected air conditioning system |
| EP19915117.6A EP3748246B1 (en) | 2019-02-14 | 2019-05-21 | Method for controlling cooling medium of multi-split air conditioning system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910114631.9 | 2019-02-14 | ||
| CN201910114631.9A CN109855252B (zh) | 2019-02-14 | 2019-02-14 | 多联机空调系统的冷媒控制方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020164203A1 true WO2020164203A1 (zh) | 2020-08-20 |
Family
ID=66897796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2019/087814 Ceased WO2020164203A1 (zh) | 2019-02-14 | 2019-05-21 | 多联机空调系统的冷媒控制方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11300313B2 (zh) |
| EP (1) | EP3748246B1 (zh) |
| CN (1) | CN109855252B (zh) |
| WO (1) | WO2020164203A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738975A (zh) * | 2022-05-07 | 2022-07-12 | 美的集团武汉暖通设备有限公司 | 多联机空调的控制方法、多联机空调以及存储介质 |
| CN115031349A (zh) * | 2022-07-19 | 2022-09-09 | 广东欧科空调制冷有限公司 | 一种多联式空调膨胀阀故障系统过热度安全的控制方法 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986336A (zh) * | 2019-11-28 | 2020-04-10 | 广东志高暖通设备股份有限公司 | 一种空调系统的压缩机频率控制方法与装置 |
| CN111023310A (zh) * | 2019-12-13 | 2020-04-17 | 青岛海信日立空调系统有限公司 | 一种多联机 |
| CN111595000B (zh) * | 2020-05-18 | 2022-03-29 | 广东美的暖通设备有限公司 | 空调系统及其水力模块的控制方法、装置和存储介质 |
| CN115127205B (zh) * | 2021-03-26 | 2024-02-13 | 松下电气设备(中国)有限公司 | 空调器及其控制方法 |
| CN113686066B (zh) * | 2021-08-27 | 2023-04-07 | 经纬恒润(天津)研究开发有限公司 | 一种热泵系统控制方法及装置 |
| CN113883680B (zh) * | 2021-09-28 | 2023-06-16 | 青岛海尔中央空调有限公司 | 空调内机快速提高效果的方法 |
| CN114135975A (zh) * | 2021-11-22 | 2022-03-04 | 珠海格力电器股份有限公司 | 空调系统的冷媒补充控制方法以及空调系统 |
| CN115654711B (zh) * | 2022-09-30 | 2024-07-26 | 宁波奥克斯电气股份有限公司 | 优化制冷模式热舒适性的控制方法、控制装置及多联机 |
| CN117073194B (zh) * | 2023-07-26 | 2026-02-27 | 珠海格力电器股份有限公司 | 电子阀控制方法、装置及相关设备 |
| CN117053353A (zh) * | 2023-08-24 | 2023-11-14 | 青岛海尔空调电子有限公司 | 用于空调器的控制方法、存储介质和空调器 |
| CN120403136B (zh) * | 2025-07-03 | 2025-10-17 | 深圳麦格米特电气股份有限公司 | 控制方法、控制器、热泵机、相关设备与介质 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196495A (zh) * | 2016-08-08 | 2016-12-07 | 珠海格力电器股份有限公司 | 一种多联机空调的控制装置、控制方法及多联机空调 |
| CN107642873A (zh) * | 2017-10-31 | 2018-01-30 | 海信(山东)空调有限公司 | 一种空调及其启动时电子膨胀阀开度控制方法 |
| CN108759007A (zh) * | 2018-06-12 | 2018-11-06 | 广东美的暖通设备有限公司 | 空调系统的控制方法、系统及空调 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888957A (en) * | 1985-09-18 | 1989-12-26 | Rheem Manufacturing Company | System and method for refrigeration and heating |
| JP2502831B2 (ja) * | 1991-03-27 | 1996-05-29 | 松下電器産業株式会社 | 多室形空気調和機 |
| DE69423847T2 (de) * | 1993-11-12 | 2000-11-09 | Sanyo Electric Co., Ltd. | Klimaanlage |
| JP3737381B2 (ja) * | 2000-06-05 | 2006-01-18 | 株式会社デンソー | 給湯装置 |
| JP2004020064A (ja) * | 2002-06-18 | 2004-01-22 | Fujitsu General Ltd | 多室形空気調和機の制御方法 |
| JP2008032336A (ja) * | 2006-07-31 | 2008-02-14 | Sanyo Electric Co Ltd | 二段膨張冷凍装置 |
| JP4389927B2 (ja) * | 2006-12-04 | 2009-12-24 | ダイキン工業株式会社 | 空気調和装置 |
| JP2009014210A (ja) * | 2007-06-29 | 2009-01-22 | Daikin Ind Ltd | 冷凍装置 |
| JP4497234B2 (ja) * | 2008-07-29 | 2010-07-07 | ダイキン工業株式会社 | 空気調和装置 |
| JP5042262B2 (ja) * | 2009-03-31 | 2012-10-03 | 三菱電機株式会社 | 空調給湯複合システム |
| CN102042648B (zh) * | 2010-11-29 | 2012-10-03 | 青岛海信日立空调系统有限公司 | 热回收式多联空调机组 |
| CN103697559B (zh) * | 2012-09-27 | 2016-04-13 | 广东美的暖通设备有限公司 | 模块式多联机及其制冷时冷媒均匀分配的控制方法 |
| CN104797893B (zh) * | 2012-11-21 | 2016-08-24 | 三菱电机株式会社 | 空气调节装置 |
| CN104813117B (zh) * | 2012-11-21 | 2016-10-05 | 三菱电机株式会社 | 空气调节装置 |
| CN103438547B (zh) * | 2013-09-23 | 2016-04-20 | 深圳麦克维尔空调有限公司 | 一种电子膨胀阀控制方法 |
| JP2015178919A (ja) * | 2014-03-19 | 2015-10-08 | サンデンホールディングス株式会社 | 冷凍装置 |
| JP6482655B2 (ja) * | 2015-05-13 | 2019-03-13 | 三菱電機株式会社 | 冷凍サイクル装置 |
| JP6479204B2 (ja) * | 2015-10-21 | 2019-03-06 | 三菱電機株式会社 | 空気調和装置 |
| US10760842B2 (en) * | 2016-11-30 | 2020-09-01 | Dc Engineering, Inc. | Method and system for improving refrigeration system efficiency |
| CN106642843A (zh) * | 2017-02-20 | 2017-05-10 | 珠海格力电器股份有限公司 | 空调机组及其运行控制方法和装置 |
| ES2692207B1 (es) * | 2017-03-29 | 2019-09-16 | Chillida Vicente Avila | Procedimiento de regulación de compresores inverter en instalaciones de refrigeracion |
| WO2019053872A1 (ja) * | 2017-09-15 | 2019-03-21 | 三菱電機株式会社 | 空気調和装置 |
| CN107726554B (zh) * | 2017-09-19 | 2020-01-17 | 青岛海尔空调电子有限公司 | 一种多联机舒适度均衡控制方法及系统 |
| CN108195049A (zh) * | 2017-12-29 | 2018-06-22 | 深圳创维空调科技有限公司 | 电子膨胀阀的控制方法、装置、制冷设备及存储介质 |
-
2019
- 2019-02-14 CN CN201910114631.9A patent/CN109855252B/zh active Active
- 2019-05-21 US US16/961,398 patent/US11300313B2/en active Active
- 2019-05-21 EP EP19915117.6A patent/EP3748246B1/en active Active
- 2019-05-21 WO PCT/CN2019/087814 patent/WO2020164203A1/zh not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196495A (zh) * | 2016-08-08 | 2016-12-07 | 珠海格力电器股份有限公司 | 一种多联机空调的控制装置、控制方法及多联机空调 |
| CN107642873A (zh) * | 2017-10-31 | 2018-01-30 | 海信(山东)空调有限公司 | 一种空调及其启动时电子膨胀阀开度控制方法 |
| CN108759007A (zh) * | 2018-06-12 | 2018-11-06 | 广东美的暖通设备有限公司 | 空调系统的控制方法、系统及空调 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3748246A4 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738975A (zh) * | 2022-05-07 | 2022-07-12 | 美的集团武汉暖通设备有限公司 | 多联机空调的控制方法、多联机空调以及存储介质 |
| CN114738975B (zh) * | 2022-05-07 | 2024-04-26 | 美的集团武汉暖通设备有限公司 | 多联机空调的控制方法、多联机空调以及存储介质 |
| CN115031349A (zh) * | 2022-07-19 | 2022-09-09 | 广东欧科空调制冷有限公司 | 一种多联式空调膨胀阀故障系统过热度安全的控制方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3748246B1 (en) | 2023-07-05 |
| EP3748246A1 (en) | 2020-12-09 |
| CN109855252A (zh) | 2019-06-07 |
| EP3748246A4 (en) | 2021-12-15 |
| CN109855252B (zh) | 2022-02-22 |
| US20210239352A1 (en) | 2021-08-05 |
| US11300313B2 (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109855252B (zh) | 多联机空调系统的冷媒控制方法 | |
| US8660704B2 (en) | Demand flow pumping | |
| WO2021233465A1 (zh) | 空调机组的控制方法及空调机组 | |
| WO2021184615A1 (zh) | 空调系统的控制方法 | |
| US11181288B2 (en) | Comfort degree balance control method and system for multi-split air conditioner | |
| WO2022237912A1 (zh) | 多联机中内机电子膨胀阀的控制方法 | |
| CN107477798B (zh) | 用于控制空调的冷媒的方法和装置、空调 | |
| CN106765927B (zh) | 空调膨胀阀的控制方法 | |
| CN111141075A (zh) | 一种空调的控制方法、装置、空调器及存储介质 | |
| WO2021169059A1 (zh) | 制冷状态下定频空调的控制方法 | |
| CN107664339A (zh) | 中央空调的冷却水泵的控制方法、装置以及中央空调 | |
| WO2021169185A1 (zh) | 制热状态下定频空调的控制方法 | |
| CN108800437A (zh) | 空调器抑制结霜控制方法 | |
| US12066225B2 (en) | Method and device for controlling pressure of units with height drop, and air conditioner device | |
| CN115420000A (zh) | 空调器室外风机的控制方法、装置、空调器及存储介质 | |
| EP3821182B1 (en) | Device and method for chiller plant management, computer readable storage device and chiller plant | |
| CN212109060U (zh) | 空调系统 | |
| CN108800438A (zh) | 空调器抑制结霜控制方法 | |
| CN115468265B (zh) | 多联机空调系统及其膨胀阀开度控制方法和控制装置 | |
| CN113551379A (zh) | 用于空调系统的膨胀阀开度控制方法 | |
| CN112728655B (zh) | 室外机电控温升控制方法、装置及空调器 | |
| CN119268196B (zh) | 空调器的控制方法、装置及空调器 | |
| CN119468544B (zh) | 换热器、控制方法、空调器及存储介质 | |
| CN119268196A (zh) | 空调器的控制方法、装置及空调器 | |
| CN112944561B (zh) | 空调机组的控制方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2019915117 Country of ref document: EP Effective date: 20200831 |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19915117 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
